tptp reference
I recently came across a new platform while browsing, and I was surprised by how smooth and fast the overall experience feels compared to others I've tried before, especially in terms of loading speed and usability
https://blog.ombreport.info/na55l9bfce/na55-reference
https://wf.unixcat.net/l45braee5iq/45br-reference
https://negrnns4.kc2g.com/e71x57zha2/71x-reference